As a system-obsessed person, I am in awe of Buster Benson. A man who was once Erik Benson and then Buster McLeod and now Buster Benson. (At least that’s as of today.) He isn’t afraid to test and retest; reinvent and rename. He doesn’t worry about it, he just does it. And if he can’t figure out how to get it done, he’ll build an app for it. “If I have an idea, I don’t do a to-do list. I just spend a couple hours building it to see if it’s interesting to me or not,” says Benson. The former Amazon.com developer and current CTO and co-founder of Habit Labs, 35.96-year-old Benson creates apps that track “habits” and, ideally, help people tackle their big lifestyle hurdles (diet, exercise, smoking etc) that have them stuck. He estimates that he’s created about 30 of these apps to date, including seasonal food-finder Locavore; the list-making 43Things.com; the health-improving game Health Month; online “morning pages” journal, 750Words; the recently launched Gonna Try; and the burgeoning Budge. His apps are marked by intuitive and …